Background: I am replacing an old Windows 2000 SBS Server with a Windows Server 2012 Essentials R2. Since we only have 10 active users we decided that rather than try and migrate from SBS 2000 we would just build the 2012 Essentials box from the ground up as a different domain.
We have a cable modem/router in front of a Cisco RV082. Our SBS 2000 network uses all static IP addresses and is behind the RV082. Both the Cable router and the RV082 have DHCP enabled. The RV082 is our gateway and has a different subnet from the cable router.
For initial configuration I connected the 2012 server directly to the cable router and allowed it to get an IP via DHCP. This worked fine. I added a single client to this network as a test using a static IP in the same range as the server but outside the DHCP pool. I was able to join the new domain and see the shares. All is good,
I am close to being ready to start adding client PC's to the new domain. I read here on Experts exchange that two SBS servers with different domains could exist on the same network segment so long as DHCP wasn't enabled. Since my current network is all static IP and by default Server 2012 Essentials does not have DHCP enabled I decided to give it a try.
First I disconnected Server 2012 from the network, then changed it's IP address to a static IP in the same segment as our SBS 2000 Server. I set the gateway IP to the RV082 and allowed the DNS to keep it's default localhost address. Once this was done I connected Server 2012 to an open port on the R082. It properly ID's the network as the new domain, but says No Internet under status.
On the client PC (Windows 8) I changed the IP to be on the same segment, the gateway to be the RV082 and the DNS to the static IP of Server 2012 then connected it to the RV082. It does not recognize the network as the domain also has No Internet under status, It can't connect to the server shares. I can't tell for sure if it is authenticating with the server because Win 8 will allow access using a domain login even if the network isn't connected.
Is what I am doing possible and I just missed a step somewhere?
My next step was to go back to connecting to the Cable Router but still use the static IP (in the cable router's subnet) on the server and client to see if that works.